Losing Streaks?

[LiNuX]

After I made Gold V, it seems that I can't seem to win that easily, every game there is at least 2 feeders, in at least 5 of my last 10 games, there was an afk. Although I won one of my 4v5 matches, I lost the 7 out of my last 10. And now my win ratio is below 50%

Anyone else run into a long string of bad games? It's been happening to me my last 20 games or so, I've won maybe 6 out of the 20.